Speed boat



A. DE SAYE SPEED BOAT Nov. 26, 1929.

2 Sheets Sheec Filed June 22, 1928 Nov. 26, 1929. A, DESAYE 1,736,904

SPEED BOAT I Filed June 22, 1928 2 Sheets-$heet 2 WITNESS INVENTOR,

Tfihehme Besoqe I v v M Patented Nov. 26, 1929 UNITED STATES ANTI-IELME DESAYE, OF

SPEED Application filed June 22,

The object of this invention is to provide a power-driven speed-boat capable of attaining exceedingly high speed. To this end the boat comprises a longitudinal series of chambers, means to drive the boat including propellers alternating ith the chambers, and means to connect the chambers in fixed relation to each other, the formation of the chambers and the construction and arrangement of the latter means being such that the boat has but little draft and in other respects the resistance of the Water and air to its movement will be the minimum.

In the drawing,

Fig. 1 is a side elevation of the speed-boat;

Fig. 2 is a side elevation of a fragment thereof, partly in section;

Fig. 3 is a front elevation of one of the propellers partly in section;

Fig. "I shows a detail thereof in section;

Fig. 5 is a plan, showing a steering rudder, its operating connections and, partly in section, a portion of the skeleton means connecting sections or chambers of the boat;

Fig. 6 a section of the speed-boat 011 line 66, Fig. 1; and

F ig. 7 a diagram of the steering c0nnections.

The bouyant chambers are indicated by the reference character 1. All of them are or may be cylindrical in cross-section, except the extreme fore and aft ones marked 1 1 which are tapered, and one of the intermediate ones, as the center one 1, which is in part cylindrical but has its fore portion built up to form a cabin or hood 1 they are all hollow and may be formed of sheet metal.

The several chambers are rigidly connected together, alined as shown, by a skeleton superstructure comprising stanchions 2 rigidly afiixed to them and upstanding therefrom, and longitudinal stretchers 2 each rigidly connecting a stanchion on one chamber with a stanchion on the next adjoining chamber. This superstructure may for the most part be constructed of tubular material so as to be both light and strong.

Thus constructed the boat will have a draft representing but a small percentage of its greatest vertical dimension, so that the Water PATENT OFFICE CLIFTON, NEW JERSEY BOAT tends centrally and longitudinally through all the chambers and may be journaled in anti-friction bearings 3 in their end walls as shown in Fig. 2, and propellers, one between each two adjoining chambers, which are spaced, and each of which propellers is preferably constructed as follows: The hub 4 of the propeller is keyed on shaft 3, as at 5, and is interposed between anti-friction bearings 6 each in turn interposed between such hub and the end wall of the adjoining chamber, these bearings affording thrust bearings for the propeller system as a whole, which it will be observed coacts with the superstructure as an important factor in preserving the alined arrangement of the chambers. The hub has spokes 7 and integral therewith a peripherally channeled rim 8 the margins of whose channel are turned inward, as at 9, except at one or more points 10 in the rim circumference. This channel receives and by its inturned edges holds against centrifugal displacement the bases 11 of propeller blades 12 which are each normally retained against displacement circumferentia-lly by screws 13, but on removal of said screws may be shifted circumferentially around the rim to the point 10 so as to remove them for repairs or replacement.

The power plant is indicated at 14 and may consist of any type of motor having a suitable driving connection with the shaft 3.

For steering I prefer to provide a rudder or rudders active on the air instead of on the water. I show two such rudders 15, one

forward and one aft, pivoted on the fore and 05 aft stanchions 2. At 16 in the hood or cabin l is the steering wheel and this may be connected. with the rudders by the flexible connections 17, substantially as shown in the diagram Fig. 6, and preferably so that the connections extend through the tubing of some of the stanchions and the stretchers 2 Thus constructed the boat may attain great speed, not only because it has little draft and opposes the minimum of surface to both Water and air but because the arrangement of the propellers at intervals along the hull formed by its series of chambers gives its propelling means ample purchase.

Having thus fully described my invention,

what I claim is:

1. A speed-boat including a plurality of fore-and-aft alined spaced bouyant chamhers, a propeller structure journaled on the chambers and having a propeller in the space between them and confining the chambers to their said alinement with each other, and

a skeleton superstructure connecting the chambers rigidly together.

2. A speed-boat including a plurality of fore-and-aft alined spaced bouyant substantially cylindrical chambers, a propeller structure journaled on the chambers and having a propellerin the space between them, and a skeleton superstructure rigidly connecting the chambers together.

3. A speed-boat including a plurality of lore-and-att alined spaced bouyant substantially cylindrical chambers, a propellerstructure journaled on the chambers and having a propeller in the space between them, a skeleton superstructure rigidly connecting the chambers together, and steering means including a rudder movable on the superstructure.

A speed-boat including a plurality of fore-andaft alined spaced bouyant substantially cylindrical chambers, and a propeller structure including a shaft extending axially through thevchambers and having a propeller in the space between them, said propeller including a fixed portion on the shaft having a circumferential channeled rim having its edges for a part of its circumference extending toward each other and a propeller blade having a base arranged in the channel and engaged under said edges and removably secured to the rim, said blade being removable upon around said fixed portion until it clears said edges.

In testimony whereof I affix my signature.

ANTHELME DESAYE.

shifting it circumferentially- 

